US EPA: Mercury Preservation Techniques
Link |
http://www.epa.gov/esd/factsheets/mpt.pdf |
Elements |
Mercury
|
Species |
Complex Inorganic Organic Protein-bound Valency |
Topic |
Chemical Analysis - Sample preservation/Storage |
Owner |
Government |
Location |
United States |
Language |
English |
Description
The EDRB-LV Solution Researchers at the EDRB-LV found that a trace amount of gold chloride (AuCl3) added to the HNO3 solution preserved all forms of mercury. The gold acts as a strong oxidizing agent that converts or maintains mercury as mercuric ion which remains in solution. Optimization of this technique revealed that a 1 ppm solution of AuCl3 in HNO3 was sufficient and did not affect any other analytes or analytical techniques.
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